mirror of
https://github.com/boostorg/charconv.git
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51 lines
1.4 KiB
C++
51 lines
1.4 KiB
C++
// Copyright 2023 Matt Borland
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// Distributed under the Boost Software License, Version 1.0.
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// https://www.boost.org/LICENSE_1_0.txt
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#include <boost/charconv/detail/compute_float80.hpp>
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#include <boost/charconv/detail/emulated128.hpp>
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#include <boost/charconv/detail/bit_layouts.hpp>
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#include <boost/core/lightweight_test.hpp>
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#include <random>
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#include <limits>
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#include <cstdint>
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#include <cmath>
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#include <iostream>
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#include <iomanip>
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// MSVC uses long double = double
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// Darwin sometimes uses double-double instead of long double
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#if BOOST_CHARCONV_LDBL_BITS > 64 && !defined(__APPLE__) && !defined(_WIN32) && !defined(_WIN64)
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using boost::charconv::detail::compute_float80;
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using boost::charconv::detail::uint128;
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template <typename T>
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inline void test_fast_path()
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{
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std::errc success;
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BOOST_TEST_EQ(compute_float80<long double>(1, T(1), false, success), 10.0L);
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BOOST_TEST_EQ(compute_float80<long double>(1, T(1), true, success), -10.0L);
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BOOST_TEST_EQ(compute_float80<long double>(27, T(1) << 112, false, success), 5.1922968585348276285304963292200960000000000000000e60L);
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BOOST_TEST_EQ(compute_float80<long double>(27, T(1) << 112, true, success), -5.1922968585348276285304963292200960000000000000000e60L);
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}
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int main()
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{
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test_fast_path<uint128>();
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#ifdef BOOST_CHARCONV_HAS_INT128
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test_fast_path<boost::uint128_type>();
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#endif
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return boost::report_errors();
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}
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#else
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int main()
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{
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return 0;
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}
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#endif
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